U.S. patent application number 17/067485 was filed with the patent office on 2021-04-15 for surgical cutting instrument with guard.
The applicant listed for this patent is Covidien LP. Invention is credited to Nikolai D. Begg, Ronald L. Green.
Application Number | 20210106376 17/067485 |
Document ID | / |
Family ID | 1000005192292 |
Filed Date | 2021-04-15 |
United States Patent
Application |
20210106376 |
Kind Code |
A1 |
Begg; Nikolai D. ; et
al. |
April 15, 2021 |
SURGICAL CUTTING INSTRUMENT WITH GUARD
Abstract
A surgical instrument includes a housing and a motor. An
elongated member extends from the housing. An end effector is at a
distal end of the elongated member. The end effector includes a jaw
member including a guard. The guard has a number of serrations
extending from a proximal end of the jaw member to a distal end of
the jaw member. The guard defines corresponding pockets between the
serrations. The guard is coupled to the motor to induce
reciprocation of the guard relative to the blade upon activation of
the motor. A blade is recessed within the guard to expose a cutting
edge of the blade between the pockets. The pockets engage tissue. A
treatment tip is at a distal end of the guard. The treatment tip
connects to an energy source. The treatment tip treats tissue upon
activation of the treatment tip.
Inventors: |
Begg; Nikolai D.;
(Wellesley, MA) ; Green; Ronald L.; (Bethel,
CT) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Covidien LP |
Mansfield |
MA |
US |
|
|
Family ID: |
1000005192292 |
Appl. No.: |
17/067485 |
Filed: |
October 9, 2020 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
62913399 |
Oct 10, 2019 |
|
|
|
Current U.S.
Class: |
1/1 |
Current CPC
Class: |
A61B 2018/00196
20130101; A61B 18/1442 20130101; A61B 2018/1455 20130101 |
International
Class: |
A61B 18/14 20060101
A61B018/14 |
Claims
1. A surgical instrument, comprising: a housing; a motor operably
disposed within the housing; an elongated member extending from a
distal end of the housing; and an end effector operably disposed at
a distal end of the elongated member, the end effector including: a
jaw member including a guard having a plurality of serrations
extending from a proximal end of the jaw member to a distal end of
the jaw member, the guard defining a corresponding plurality of
pockets between the serrations, the guard operably coupled to the
motor to induce reciprocation thereof relative to the blade upon
activation of the motor; a blade operably disposed within the
guard, the blade recessed within the guard to expose a cutting edge
of the blade between the plurality of pockets configured to engage
tissue; and a treatment tip disposed at a distal end of the guard,
the treatment tip adapted to connect to an energy source and
configured to treat tissue upon activation thereof.
2. The surgical instrument of claim 1, wherein the plurality of
serrations of the guard includes a geometry configured to direct
tissue into the corresponding plurality of pockets when the guard
is moved across tissue to induce cutting by the blade.
3. The surgical instrument of claim 1, wherein the geometry of each
serration includes angled surfaces to direct tissue into the
corresponding plurality of pockets when the guard is moved across
tissue to induce cutting by the blade.
4. The surgical instrument of claim 3, wherein the angled surfaces
include proximal-facing surfaces.
5. The surgical instrument of claim 3, wherein the angled surfaces
include distal-facing surfaces.
6. The surgical instrument of claim 1, wherein the cutting edge is
sharpened to induce mechanical cutting.
7. The surgical instrument of claim 1, wherein the cutting edge is
substantially dull to limit mechanical cutting and induce
electrical cutting.
8. The surgical instrument of claim 1, wherein the blade is adapted
to connect to the energy source or a second energy source to induce
cutting.
9. The surgical instrument of claim 8, wherein the blade cuts
tissue via electrical cutting, ultrasonic cutting, microwave
cutting, optical cutting, or resistive cutting.
10. The surgical instrument of claim 1, wherein the treatment tip
is electrically conductive, resistive or ultrasonic.
11. A surgical instrument, comprising: a housing; a motor operably
disposed within the housing; an elongated member extending from a
distal end of the housing; and an end effector operably disposed at
a distal end of the elongated member, the end effector including: a
jaw member including a guard having a plurality of serrations
extending from a proximal end of the jaw member to a distal end of
the jaw member, the guard defining a corresponding plurality of
pockets between the serrations; a blade operably disposed within
the guard and operably coupled to the motor to induce reciprocation
thereof relative to the guard upon activation of the motor, the
blade recessed within the guard to expose a cutting edge of the
blade between the plurality of pockets configured to engage tissue;
and an treatment tip disposed at a distal end of the guard, the
treatment tip adapted to connect to an energy source and configured
to treat tissue upon activation thereof.
12. The surgical instrument of claim 11, wherein the plurality of
serrations of the guard includes a geometry configured to direct
tissue into the corresponding plurality of pockets when the blade
is moved across tissue to induce cutting by the blade.
13. The surgical instrument of claim 11, wherein the geometry of
each serration includes angled surfaces to direct tissue into the
corresponding plurality of pockets when the blade is moved across
tissue to induce cutting by the blade.
14. The surgical instrument of claim 13, wherein the angled
surfaces include proximal-facing surfaces.
15. The surgical instrument of claim 13, wherein the angled
surfaces include distal-facing surfaces.
16. The surgical instrument of claim 11, wherein the cutting edge
is sharpened to induce mechanical cutting.
17. The surgical instrument of claim 11, wherein the cutting edge
is substantially dull to limit mechanical cutting and induce
electrical cutting.
18. The surgical instrument of claim 11, wherein the blade is
adapted to connect to the energy source or a second energy source
to induce cutting.
19. The surgical instrument of claim 18, wherein the blade cuts
tissue via electrical cutting, ultrasonic cutting, microwave
cutting, optical cutting, or resistive cutting.
20. The surgical instrument of claim 11, wherein the treatment tip
is electrically conductive, resistive or ultrasonic.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] The present application claims priority to and the benefit
of U.S. Provisional Application No. 62/913,399 filed Oct. 10, 2019.
The entire contents of which are incorporated by reference
herein.
BACKGROUND
Technical Field
[0002] The present disclosure relates generally to surgical
apparatuses for use in minimally invasive surgical procedures, such
as endoscopic and/or laparoscopic procedures, or open procedures,
and more particularly, the present disclosure relates to a surgical
cutting instrument having a guard.
Discussion of Related Art
[0003] Minimally invasive surgery, such as endoscopic surgery,
reduces the invasiveness of surgical procedures. Endoscopic surgery
involves surgery through body walls, for example, viewing and/or
operating on the ovaries, uterus, gall bladder, bowels, kidneys,
appendix, etc. There are many common endoscopic surgical
procedures, including arthroscopy, laparoscopy, gastroentroscopy
and laryngobronchoscopy, just to name a few. In these procedures,
trocars are utilized for creating incisions through which the
endoscopic surgery is performed. Trocar tubes or cannula devices
are extended into and left in place in the abdominal wall to
provide access for endoscopic surgical tools. A camera or endoscope
is inserted through a trocar tube to permit the visual inspection
and magnification of the body cavity. The surgeon can then perform
diagnostic and/or therapeutic procedures at the surgical site with
the aid of specialized instrumentation, such as forceps, graspers,
cutters, applicators, and the like, which are designed to fit
through additional cannulas.
[0004] Minimally-invasive or open surgical procedures may each be
used for partial or total retrieval of a tissue specimen from an
internal body cavity, or for careful dissection of a particular
tissue or area without dissecting adjacent organs or vessels. For
example, dense tissue adhesions may be removed through sharp
dissection techniques including a scalpel, scissors or other
surgical cutting devices. Preferential dissection of "tissue
strings" associated with dense tissue adhesions may be performed by
selectively cutting particular tissue regions.
SUMMARY
[0005] In accordance with an aspect of the present disclosure, a
surgical instrument includes a housing and a motor within the
housing. An elongated member extends from a distal end of the
housing. An end effector is at a distal end of the elongated
member. The end effector includes a jaw member including a guard.
The guard has a number of serrations extending from a proximal end
of the jaw member to a distal end of the jaw member. The guard
defines corresponding pockets between the serrations. The guard is
coupled to the motor to induce reciprocation of the guard relative
to the blade upon activation of the motor. A blade is recessed
within the guard to expose a cutting edge of the blade between the
pockets. The pockets engage tissue. A treatment tip is at a distal
end of the guard. The treatment tip connects to an energy source.
The treatment tip treats tissue upon activation of the treatment
tip.
[0006] In some aspects, the treatment tip may be electrically
conductive, resistive or ultrasonic.
[0007] In some aspects, the serrations of the guard include a
geometry configured to direct tissue into the corresponding pockets
when the guard is moved across tissue to induce cutting by the
blade.
[0008] In some aspects, the geometry of each serration includes
angled surfaces to direct tissue into the corresponding pockets
when the guard is moved across tissue to induce cutting by the
blade. The angled surfaces may include proximal-facing surfaces or
distal-facing surfaces.
[0009] In some aspects, the cutting edge is sharpened to induce
mechanical cutting.
[0010] In some aspects, the cutting edge is substantially dull to
limit mechanical cutting and induce electrical cutting.
[0011] In some aspects, the blade is adapted to connect to a first
energy source or a second energy source to induce cutting. The
blade may cut tissue via electrical cutting, ultrasonic cutting,
microwave cutting, optical cutting, or resistive cutting.
[0012] In accordance with an aspect of the present disclosure, the
jaw member includes the guard including the serrations extending
from the proximal end of the jaw member to the distal end of the
jaw member. The guard defines a corresponding plurality of pockets
between the serrations. The blade is positioned within the guard.
The blade is coupled to the motor to induce reciprocation of the
blade relative to the guard upon activation of the motor. The blade
is recessed within the guard to expose the cutting edge of the
blade between the pockets. The pockets are arranged to engage
tissue
[0013] In some aspects, the serrations of the guard include a
geometry to direct tissue into the corresponding pockets when the
blade is moved across tissue to induce cutting by the blade. For
example, the geometry of each serration includes angled surfaces to
direct tissue into the corresponding pockets when the blade is
moved across tissue to induce cutting by the blade. The angled
surfaces may include distal-facing surfaces or proximal facing
surfaces.
BRIEF DESCRIPTION OF THE DRAWINGS
[0014] The accompanying drawings, which are incorporated in and
constitute a part of this specification, illustrate embodiments of
the present disclosure and, together with the detailed description
below, serve to further explain the present disclosure, in
which:
[0015] FIG. 1 is a front, perspective view of a surgical cutting
instrument configured for use in accordance with the present
disclosure;
[0016] FIG. 2 is a front, perspective view of a first end effector
employable by the surgical cutting instrument of FIG. 1 in
accordance with the present disclosure; and
[0017] FIG. 3 is a front, perspective view of a second end effector
employable by the surgical cutting instrument of FIG. 1 in
accordance with the present disclosure.
DETAILED DESCRIPTION
[0018] As used herein, the term "distal" refers to the portion that
is being described which is further from a user, while the term
"proximal" refers to the portion that is being described which is
closer to a user. Further, to the extent consistent, any of the
aspects and features detailed herein may be used in conjunction
with any or all of the other aspects and features detailed
herein.
[0019] As used herein, the terms parallel and perpendicular are
understood to include relative configurations that are
substantially parallel and substantially perpendicular up to about
+ or -10 degrees from true parallel and true perpendicular.
[0020] "About" or "approximately" or "substantially" as used herein
may be inclusive of the stated value and means within an acceptable
range of variation for the particular value as determined by one of
ordinary skill in the art, considering the measurement in question
and the error associated with measurement of the particular
quantity (e.g., the limitations of the measurement system). For
example, "about" may mean within one or more standard variations,
or within .+-.30%, 20%, 10%, 5% of the stated value.
[0021] Descriptions of technical features or aspects of an
exemplary embodiment of the present disclosure should typically be
considered as available and applicable to other similar features or
aspects in another exemplary embodiment of the present disclosure.
Accordingly, technical features described herein according to one
exemplary embodiment of the present disclosure may be applicable to
other exemplary embodiments of the present disclosure, and thus
duplicative descriptions may be omitted herein.
[0022] Exemplary embodiments of the present disclosure will be
described more fully below (e.g., with reference to the
accompanying drawings). Like reference numerals may refer to like
elements throughout the specification and drawings. The surgical
cutting instrument described herein may be particularly useful in
minimally invasive surgical procedures, such as endoscopic and/or
laparoscopic procedures, or open procedures.
[0023] Referring to FIGS. 1 to 3, a surgical instrument 10 includes
a housing 110 and a motor 150 within the housing 110. An elongated
member 130 extends from a distal end 114 of the housing 110. An end
effector (e.g., end effector 220 or 320 illustrated in FIG. 2 or 3,
respectively) is disposed at a distal end 118 of the elongated
member 130. In some embodiments, the elongated member 130 may
include a portion 132 extending at least partially through the
housing 110 to connect with motor 150. Thus, an actuating motion of
the motor 150 may be translated through the housing 110 and into a
guard 202 or a blade 205 disposed within the end effector (e.g.,
end effector 220 or 320 illustrated in FIG. 2 or 3, respectively)
to create a reciprocating motion in the guard 202 or the blade 205,
as described in more detail below. The phrases "surgical
instrument" and "surgical cutting instrument" may be used
interchangeably herein.
[0024] Referring to FIGS. 1 and 2, the end effector 220 includes a
jaw member 201 including a guard 202. The guard 202 includes a
series of serrations 203 extending from a proximal end 212 of the
jaw member 201 to a distal end 214 of the jaw member 201. The guard
202 defines corresponding pockets 204 between adjoining serrations
203. The guard 202 is coupled to the motor 150 to induce
reciprocation of the guard 202 relative to the blade 205 upon
activation of the motor 150. The blade 205 is recessed within the
guard 202 to expose a cutting edge 206 of the blade 205 within each
pocket 204. The serrations 203 are configured to engage tissue and
direct the tissue into the corresponding pockets 204 and into
contact with the blade 205 to facilitate cutting of the tissue. A
treatment tip 207 extends distally from a distal end 214 of the
guard 202. The treatment tip 207 may be connected to an energy
source (e.g., energy source 400) or may be coupled to an internal
energy source (e.g., battery). The treatment tip 207 is configured
to treat tissue (e.g., by coagulation, ultrasonic, resistive
heating, etc.) upon activation thereof. The treatment tip 207 may
be, for example, an electrically conductive, resistive or
ultrasonic tip.
[0025] In accordance with another embodiment of the present
disclosure, the blade 205 may be coupled to the motor 150 to induce
reciprocation of the blade 205 relative to the guard 202 upon
activation of the motor 150. The serrations 203 of the guard 202
include a geometry to direct tissue into the corresponding pockets
204 and across the blade 205 induce cutting by the blade 205.
Alternatively, tissue may be directed into the corresponding
pockets 204 when the guard 202 is moved relative to the blade 205
to induce cutting.
[0026] In embodiments, the geometry of each serration 203 includes
angled surfaces 208 configured to direct tissue into the
corresponding pockets 204. The angled surfaces 208 may increase
pressure between the cutting edge 206 of the blade 205 and tissue
being cut by pinching the tissue between the angled surfaces 208
and the cutting edge 206. The angled surfaces 208 in end effector
220 are distal-facing surfaces. Thus, the end effector 220 may be
particularly useful for cutting tissue by advancing the surgical
cutting instrument 10 along a distal direction as tissue is
directed into the cutting edge 206 of the blade 205 by the
distal-facing surfaces of the guard 202.
[0027] An end effector 320 is described below with reference to
FIGS. 1 and 3. The end effector 320 is substantially the same as
the end effector 220 unless otherwise indicated (e.g., end effector
320 includes proximal-facing angled surfaces 308). Thus technical
features described with respect to end effector 220 are similarly
available to end effector 320 wherever technically feasible.
[0028] Referring to FIGS. 1 and 3, the end effector 320 includes a
jaw member 301 including a guard 302. The guard 302 includes a
series of serrations 303 extending from a proximal end 312 of the
jaw member 301 to a distal end 314 of the jaw member 301. The guard
302 defines corresponding pockets 304 between adjoining serrations
303.
[0029] The guard 302 is coupled to the motor 150 to induce
reciprocation of the guard 302 relative to the blade 305 upon
activation of the motor 150. The blade 305 is recessed within the
guard 302 to expose a cutting edge 306 of the blade 305 within each
pocket 304. The serrations 303 engage tissue and direct the tissue
into the pockets 304 to contact the blade 305 to facilitate cutting
of the tissue. A treatment tip 307 extends from a distal end 314 of
the guard 302. The treatment tip 307 may be connected to an energy
source (e.g., energy source 400) or may be coupled to an internal
energy source (e.g., battery). The treatment tip 307 is configured
to treat tissue (e.g., by coagulation, ultrasonic, resistive
heating, etc.) upon activation thereof.
[0030] In accordance with another embodiment of the present
disclosure, the blade 305 may be coupled to the motor 150 to induce
reciprocation of the blade 305 relative to the guard 302 upon
activation of the motor 150. The serrations 303 of the guard 302
include a geometry to direct tissue into the corresponding pockets
304 and across the blade 305 to induce cutting by the blade 305.
Alternatively, tissue may be directed into the corresponding
pockets 304 when the guard 302 is moved relative to the blade 305
to induce cutting.
[0031] The geometry of each serration 303 may be configured to
include angled surfaces 308 to direct tissue into the corresponding
pockets 304. The angled surfaces 308 may increase pressure between
the cutting edge 306 of the blade 305 and tissue being cut by
pinching the tissue between the angled surfaces 308 and the cutting
edge 306. The angled surfaces 308 of end effector 320 are
proximal-facing surfaces. Thus, the end effector 320 may be
particularly useful for cutting tissue by advancing the surgical
cutting instrument 10 along a proximal direction as tissue is
directed into the cutting edge 306 of the blade 305 by the
proximal-facing surfaces of the guard 302.
[0032] Referring to FIGS. 1-3, in some embodiments, the treatment
tip (e.g., tip 207 or 307) is electrically connected to a switch 50
operably disposed on the housing 110. The switch 50 is activatable
to supply electrosurgical energy to the treatment tip 207, 307
using an energy algorithm. The energy algorithm includes a cutting
algorithm, a coagulating algorithm and/or a blending algorithm.
Thus, the treatment tip 207, 307 may be used to "spot treat" a
desired area without the need to employ another instrument.
[0033] The cutting edge (e.g., cutting edge 206 or 306) may be
sharpened to facilitate mechanical cutting. The cutting edge (e.g.,
cutting edge 206 or 306) may be substantially dull to limit
mechanical cutting and induce electrical cutting. In this instance,
the blade 205, 305 would be coupled to an electrosurgical energy
source. The blade (e.g., blade 205 or 305) may be configured to cut
tissue via electrical cutting, ultrasonic cutting, microwave
cutting, optical cutting, or resistive cutting.
[0034] The blade (e.g., blade 205 or 305) may be adapted to connect
to a first energy source 400 (e.g., a generator) or a second energy
source 500 (e.g., a generator) to selectively induce cutting. The
first energy source 400 may be the same energy source as the energy
source connected with the treatment tip (e.g., tip 207 or 307). The
second energy source 500 may be a separate energy source from the
first energy source 400. The second energy source 500 may supply
energy to the blade, while the first energy source 400 supplies
energy to the treatment tip 207, 307. A single energy source (e.g.,
energy source 400 or 500) may selectively apply energy to the blade
(e.g., blade 205 or 305) and/or the treatment tip 207 or 307.
Independent switches operably disposed on the housing 110 may
independently control a supply of energy to the blade 205, 305 or
the treatment tip 207, 307, respectively.
[0035] Referring particularly to FIGS. 1 and 2, the distal-facing
surface 208 of guard 202 may be particularly useful for cutting
tissue by advancing the surgical cutting instrument 10 in a distal
direction. By advancing the surgical cutting instrument 10 in a
distal direction, tissue is forced into the pockets 204 along the
distal-facing angled surfaces 208 and into contact with the cutting
edge 206 of blade 205. This may occur while the blade 205 and/or
the guard 202 move in a longitudinal reciprocating fashion relative
to the end effector 220 (see, e.g., the bidirectional arrows
illustrated in FIGS. 2 and 3).
[0036] Increased pressure between cutting tissue and the cutting
edge 206 is generated at a point along the cutting edge 206 in
substantially immediate proximity to a lower end of the
distal-facing angled surfaces 208 (e.g., at a point where the
angled surfaces 208 cross the cutting edge 206). As a result
thereof, tissue may be cut along a desired plane without the blade
205 contacting adjacent organs or vessels. For example, "strings"
or particular regions of tissue adhesions may be precisely cut by
use of a particular pocket 204 of end effector 220 directing tissue
into precise contact with the cutting edge 206 of blade 205.
[0037] Referring particularly to FIGS. 1 and 3, end effector 320
may be employed in substantially the same fashion as end effector
220, except that end effector 320 is particularly useful for
cutting tissue in a proximal direction.
[0038] The various embodiments disclosed herein may also be
configured to work with robotic surgical systems and what is
commonly referred to as "Telesurgery." Such systems employ various
robotic elements to assist the surgeon and allow remote operation
(or partial remote operation) of surgical instrumentation. Various
robotic arms, gears, cams, pulleys, electric and mechanical motors,
etc. may be employed for this purpose and may be designed with a
robotic surgical system to assist the surgeon during the course of
an operation or treatment. Such robotic systems may include
remotely steerable systems, automatically flexible surgical
systems, remotely flexible surgical systems, remotely articulating
surgical systems, wireless surgical systems, modular or selectively
configurable remotely operated surgical systems, etc.
[0039] The robotic surgical systems may be employed with one or
more consoles that are next to the operating theater or located in
a remote location. In this instance, one team of surgeons or nurses
may prep the patient for surgery and configure the robotic surgical
system with one or more of the instruments disclosed herein while
another surgeon (or group of surgeons) remotely controls the
instruments via the robotic surgical system. As can be appreciated,
a highly skilled surgeon may perform multiple operations in
multiple locations without leaving his/her remote console which can
be both economically advantageous and a benefit to the patient or a
series of patients.
[0040] The robotic arms of the surgical system are typically
coupled to a pair of master handles by a controller. The handles
can be moved by the surgeon to produce a corresponding movement of
the working ends of any type of surgical instrument (e.g., end
effectors, graspers, knifes, scissors, etc.) which may complement
the use of one or more of the embodiments described herein. The
movement of the master handles may be scaled so that the working
ends have a corresponding movement that is different, smaller or
larger, than the movement performed by the operating hands of the
surgeon. The scale factor or gearing ratio may be adjustable so
that the operator can control the resolution of the working ends of
the surgical instrument(s).
[0041] The master handles may include various sensors to provide
feedback to the surgeon relating to various tissue parameters or
conditions, e.g., tissue resistance due to manipulation, cutting or
otherwise treating, pressure by the instrument onto the tissue,
tissue temperature, tissue impedance, etc. As can be appreciated,
such sensors provide the surgeon with enhanced tactile feedback
simulating actual operating conditions. The master handles may also
include a variety of different actuators for delicate tissue
manipulation or treatment further enhancing the surgeon's ability
to mimic actual operating conditions.
[0042] From the foregoing and with reference to the various figure
drawings, those skilled in the art will appreciate that certain
modifications can also be made to the present disclosure without
departing from the scope of the same. While several embodiments of
the disclosure have been shown in the drawings, it is not intended
that the disclosure be limited thereto, as it is intended that the
disclosure be as broad in scope as the art will allow and that the
specification be read likewise. Therefore, the above description
should not be construed as limiting, but merely as exemplifications
of particular embodiments. Those skilled in the art will envision
other modifications within the scope and spirit of the claims
appended hereto.
* * * * *